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Erionite-K Mineral Data
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General Erionite-K Information
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 Chemical Formula: |
(K2,Ca,Na2)2[Al4Si14O36]•15(H2O) |
| Composition: |
Molecular Weight = 2,958.94 gm |
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Potassium 4.39 % K 5.28 % K2O |
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Barium 0.09 % Ba 0.10 % BaO |
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Sodium 1.79 % Na 2.42 % Na2O |
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Calcium 1.34 % Ca 1.88 % CaO |
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Magnesium 0.05 % Mg 0.08 % MgO |
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Aluminum 7.34 % Al 13.87 % Al2O3 |
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Silicon 26.59 % Si 56.88 % SiO2 |
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Hydrogen 2.18 % H 19.48 % H2O |
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Oxygen 56.23 % O |
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______ ______ |
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100.00 % 99.99 % = TOTAL OXIDE |
| Empirical Formula: |
K3.32Na2.31Ca0.99Mg0.06Ba0.02Al8.05Si28.01O72�31.99(H2O) |
| Environment: |
Occurs in volcanic and sedimentary rocks. Common in altered silicic tuff., especially in saline lacustrine deposits. |
| IMA Status: |
Approved IMA 1998 (Dana # Added) |
| Locality: |
Rome, Oregon, U.S.A. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek for wool, in allusion to its white, fibrous, wool-like appearance. The K-dominant member of the erionite series. |
| Name Pronunciation: |
Erionite-K  |
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